11. (how/they/ feel?)
12. (they / not/talk)
13. (where/I/ stay?)
14. (why/he / study on a Saturday night?)
15. (I / go to school when you saw me)
16. (you sleep at 6am)
17. (she / work when I called)
18. (we / not / leave when you called)
19. (I not stay in a hotel)
20. (we make too much noise?)​